Click on a day for an hourly weather forecast
The temperatures in Fehmarn in September are usually low and can range between 14°C and 17°C.
You can expect about 3 to 8 days of rain in Fehmarn during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Fehmarn in September 2026.
If you’re planning to visit Fehmarn in the near future, we highly recommend that you review the 14 day weather forecast for Fehmarn before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / 1° | 8 | 15 | 8 | 72 mm | Awful | Fehmarn in January |
| February | 3° / 1° | 6 | 14 | 8 | 62 mm | Awful | Fehmarn in February |
| March | 5° / 3° | 6 | 22 | 3 | 56 mm | Awful | Fehmarn in March |
| April | 8° / 6° | 4 | 25 | 1 | 42 mm | Ok | Fehmarn in April |
| May | 13° / 10° | 5 | 26 | 0 | 81 mm | Ok | Fehmarn in May |
| June | 17° / 14° | 5 | 25 | 0 | 98 mm | Good | Fehmarn in June |
| July | 19° / 16° | 7 | 24 | 0 | 132 mm | Ok | Fehmarn in July |
| August | 20° / 17° | 7 | 24 | 0 | 135 mm | Ok | Fehmarn in August |
| September | 17° / 14° | 6 | 24 | 0 | 106 mm | Good | Fehmarn in September |
| October | 13° / 11° | 8 | 23 | 0 | 101 mm | Bad | Fehmarn in October |
| November | 9° / 7° | 7 | 22 | 1 | 94 mm | Bad | Fehmarn in November |
| December | 5° / 3° | 9 | 17 | 5 | 81 mm | Awful | Fehmarn in December |